Name: UHP SS316L VCR Short Weld Tubes | 1/8"–1" | BA/EP | Metal Face Seal
Brand: WeldPure

These UHP SS316L VCR short weld tubes are designed for ultra-high purity vacuum and semiconductor applications. Available in sizes from 1/8″ to 1″, they feature a metal face seal for reliable, leak-tight connections. The BA/EP surface finish ensures minimal particle generation and excellent corrosion resistance. Compatible with standard VCR fittings and ideal for gas delivery systems, high-purity lines, and vacuum equipment.

Type / Configuration

Clear

Description
Additional information

Type	Variant (Product Size × Tube OD)	Product Size (inch)	Tube OD (inch)	Tube OD (mm)	A/mm	B/mm	T/mm
Long Weld Tube	1/8″ × 1/8″	1/8	1/8	3.18	36.1	19.1	0.71
Long Weld Tube	1/4″ × 1/4″	1/4	1/4	6.35	30.5	6.4	0.89
Long Weld Tube	1/4″ × 1/4″	1/4	1/4	6.35	33.5	9.6	0.89
Long Weld Tube	1/4″ × 1/4″	1/4	1/4	6.35	43.2	19.1	0.89
Long Weld Tube	1/2″ × 1/4″	1/2	1/4	6.35	45.7	19.1	0.89
Long Weld Tube	1/2″ × 3/8″	1/2	3/8	9.53	32.8	6.4	0.89
Long Weld Tube	1/2″ × 3/8″	1/2	3/8	9.53	45.5	19.1	0.89
Long Weld Tube	1/2″ × 1/2″	1/2	1/2	12.70	32.8	6.4	1.24
Long Weld Tube	1/2″ × 1/2″	1/2	1/2	12.70	35.8	9.6	1.24
Long Weld Tube	1/2″ × 1/2″	1/2	1/2	12.70	45.5	19.1	1.24
Long Weld Tube	3/4″ × 3/4″	3/4	3/4	19.05	51.6	19.1	1.24
Long Weld Tube	1″ × 1″	1	1	25.4	58.9	19.1	1.65
Short Weld Tube	1/8″ × 1/8″	1/8	1/8	3.18	27.4	19.1	0.71
Short Weld Tube	1/4″ × 1/8″	1/4	1/8	3.18	27.9	19.1	0.71
Short Weld Tube	1/4″ × 1/4″	1/4	1/4	6.35	15.2	6.4	0.89
Short Weld Tube	1/4″ × 1/4″	1/4	1/4	6.35	18.3	9.6	0.89
Short Weld Tube	1/4″ × 1/4″	1/4	1/4	6.35	27.9	19.1	0.89
Short Weld Tube	1/2″ × 1/4″	1/2	1/4	6.35	28.4	19.1	0.89
Short Weld Tube	1/2″ × 3/8″	1/2	3/8	9.53	15.7	6.4	0.89
Short Weld Tube	1/2″ × 3/8″	1/2	3/8	9.53	28.4	19.1	0.89
Short Weld Tube	1/2″ × 1/2″	1/2	1/2	12.7	18.8	9.6	1.24
Short Weld Tube	1/2″ × 1/2″	1/2	1/2	12.7	28.4	19.1	1.24
Short Weld Tube	3/4″ × 3/4″	3/4	3/4	19.05	29	19.1	1.65
Short Weld Tube	1″ × 1″	1	1	25.4	32	19.1	1.65

VCR Assembly Instructions

Step 1

Insert the gasket into the female nut and make sure it is properly seated.

Check that the gasket is not damaged during installation.

Step 2

Thread the female nut onto the male nut until the two nuts are properly engaged.

Make sure that the sealing surfaces and gasket remain correctly positioned.

Step 3

Use suitable assembly tools, such as two wrenches, to tighten the connection.

After the female nut and male nut are hand-tight, tighten the female nut an additional 1/8 turn.

During final tightening, hold the male nut and fitting body securely in place to prevent them from rotating.

The metal-face-seal fitting can be disassembled and reassembled. Replace the gasket with a new one each time the fitting is reassembled.

Step 4

Before completing the assembly, make sure that the sealing surfaces and gasket are correctly positioned and properly seated.

Material	316L Stainless Steel
Type / Configuration	Short 1/8" × 1/8" (A=27.4mm), Short 1/4" × 1/8" (A=27.9mm), Short 1/4" × 1/4" (A=15.2mm), Short 1/4" × 1/4" (A=18.3mm), Short 1/4" × 1/4" (A=27.9mm), Short 1/2" × 1/4" (A=28.4mm), Short 1/2" × 3/8" (A=15.7mm), Short 1/2" × 3/8" (A=28.4mm), Short 1/2" × 1/2" (A=18.8mm), Short 1/2" × 1/2" (A=28.4mm), Short 3/4" × 3/4" (A=29mm), Short 1" × 1" (A=32mm), Long 1/8" × 1/8" (A=36.1mm), Long 1/4" × 1/4" (A=30.5mm), Long 1/4" × 1/4" (A=33.5mm), Long 1/4" × 1/4" (A=43.2mm), Long 1/2" × 1/4" (A=45.7mm), Long 1/2" × 3/8" (A=32.8mm), Long 1/2" × 3/8" (A=45.5mm), Long 1/2" × 1/2" (A=32.8mm), Long 1/2" × 1/2" (A=35.8mm), Long 1/2" × 1/2" (A=45.5mm), Long 3/4" × 3/4" (A=51.6mm), Long 1" × 1" (A=58.9mm)
Country of Origin	China
Surface Finish	Electropolished (EP)
Internal Surface Roughness	0.13-0.25μm
Temperature (°F)	1000
Temperature (°C)	538
Helium Leak Test	Available upon request
Material Test Certificate (MTC)	Available upon request
Certificate of Conformance (CoC)	Available upon request, where applicable
Elastomer / Seal Compliance	FDA / applicable food-contact documentation, where applicable